diff --git a/index.js b/index.js
index 294f6b2..61f6dfe 100644
--- a/index.js
+++ b/index.js
@@ -8,11 +8,10 @@ const s4 = "bread";
 const s5 = "and";
 
 // Concatenate the string variables into one new string
-
-
+const tongueTwister = s1 + " " + s2 + " " + s3 + " " + s4 + " " + s5 +" " + s3 + " " + s2 + " " + s1 + " " +s4;
 // Print out the concatenated string
 
-
+console.log(tongueTwister);
 
 
 /*******************************************
@@ -20,13 +19,16 @@ const s5 = "and";
 *******************************************/
 const part1 = "java";
 const part2 = "script";
+ 
+ const x1 = part1.indexOf(0,3).toUpperCase();
+ const x2 = part2.indexOf(0,5).toUpperCase();
 
 // Convert the last letter of part1 and part2 to uppercase and concatenate the strings
-
+const result = x1 + " " + x2 + " ";
 
 // Print the cameLtaiL-formatted string
 
-
+console.log(result);
 
 
 /*******************************************
@@ -35,11 +37,11 @@ const part2 = "script";
 const billTotal = 84;
 
 // Calculate the tip (15% of the bill total)
-
+const tipAmount = billTotal * 15/100;
 
 // Print out the tipAmount
 
-
+console.log(tipAmount);
 
 
 /*******************************************
@@ -47,11 +49,11 @@ const billTotal = 84;
 *******************************************/
 
 // Generate a random integer between 1 and 10 (inclusive)
-
+const randomNumber = (Math.random(9));
 
 // Print the generated random number
 
-
+console.log(randomNumber);
 
 /*******************************************
     Iteration 3.1 | Booleans
@@ -62,15 +64,23 @@ const b = false;
 
 // Try and guess the output of the below expressions first and write your answers down:
 const expression1 = a && b;
+false;
 
 const expression2 = a || b;
+true;
 
 const expression3 = !a && b;
+false;
+
 
 const expression4 = !(a && b);
+true;
 
-const expression5 = !a || !b;
 
-const expression6 = !(a || b);
 
-const expression7 = a && a;
\ No newline at end of file
+const expression5 = !a || !b;
+true;
+const expression6 = !(a || b);
+false;
+const expression7 = a && a;
+true;
\ No newline at end of file